Damper-regulator.



T. CONNELL.

Y DAMPER REGULATOR. APPLICATION FlLED NOV. 2. 1916.

LQMJ 9Q. Patented. Feb. 19, 191&

1/22 11 e 3 S. WM/ y Z52 UNIiTlE %TA% Psi-TEN l ihllQEt THOMAS CONNELL,OF IOWA CITY, IOWA;

DAMPER-RE GUI/ACTOR.

Application filed November 2, 1816.

To all whom it may concern:

Be it known that I, THOMAS CoNNnLL, a citizen of the United States, andresident of Iowa City in the county of Johnson and State of-Iowa, haveinvented a certain new and useful Damper-Regulator, of which thefollowing is a specification.

The object of my invention is to provide a damper regulator of simple,durable and inexpensive construction.

A further object is to provide such a device especially adapted forinstallation on boilers of heating systems of the vapor type.

A further object is to provide a means whereby approp iate dampers maybe lowered and raised automatically when the pressure in the boilerbecomes less or greater.

A further object is to provide such a device having means for indicatingboiler pressure which also show whether the regulator is beingproperlyoperated by the pressure in the boiler.

A further object is to provide a damper regulator operating said dampersby a movable arm, and to provide suitable devices to limit the movementof the arm in either direction. v

A still further object is to provide a rigid passage between a waterchamber and a tank on the regulator arm.

My invention consists in the construction, arrangement, and combinationof the various parts of the device. whereby the objects contemplated areattained, as hereinafter more fully set forth. pointed out in myclaims,and illustraten in the accompanying drawings, in which:

Figure 1 shows a front elevation of a boiler having a damper regulatorattached thereto which embodies my invention.

Fig. 2 shows a front elevation of the de vice with certain parts insection to better illustrate the construction, and,

Fig. 3 shows a side elevation with parts broken away.

Referring to the accompanyingdrawings, 1 have used the reference numeral10 to inclicate generally a boiler of ordinary construction, havingdamper 11 and check draft 12 mounted thereon, the damper and check draftbeing preferably arranged to be opened by a pull on a chain and to beclosed by gravity when the chain is loosened.

An upright 18 is fixedto the floor adjacent to the boiler or to the topof the boiler, and extends to a point above the water level inSpecification of Letters Patent.

Serial No. 129,208.

the boiler, where it supports a liquid tight chamber 1%, the latterbeing preferably rectangular in shape. A pipe 15 is adapted to conductthevapor in the boiler to the top of the chamber 14:, and a second pipe16 conducts back to the boiler the over flow from the chamber when thewater therein reaches a point near the top. The pipe 16 is arranged todischarge into the pipe 15 at a point below the water line in thechamber so that it will not be necessary to have two openings into theboiler to attach my device thereto A bushing 18 is screwed into theopening 17 in the upper part of one of the sides of the chamber. thebushing being provided with a hearing at its outer end. A second bushing19 is screwed into the inner end of the bushing 18 a suflicient-distanceto allow space for packing 20 between the bearing on bushing 18 and theadjacent end of bushing 19.

A tube 21 is iournaled in the bushings 18 and 19 and screw threaded atits outer end, the inner end being bent at right angles to the portionin the bearings and extending downwardly to a point adj cent to thebottom of the chamber. Collars are fixed to the tube 21 to prevent itfrom sliding longitudinally in said bearings.

A T 22 is screwed to the outer end of the tube 21. a partition 23 beingformed therein adapted to prevent the liquid in said tube from enteringone of the branches in the T.

An army 24 is fixed into the closed branch of the T. said arm having aweight slidablv mounted thereon. a set screw 34 being adapted to coactwith arm 24 to hold the weight in any desired place on the latter. Atube 26 of substantially the same length as arm 2% is screwed into theother branch of the T, and extends in the opposite direction from saidarm, the tube 26 having atank 27 fixed to its outer end andcommunicating with the inside of the tube. The tank 27 is provided withvent in the top thereof,

and rings 28 and 29 are fixed to its outer, upper and lower edgesrespectively. I

A chain 30 operatively connects the rlng 28 with the check draft 12, anda chain 31 connects ring 29 with damper 11.

Patented Feb.19, 1918. t

The parts are so arranged that when there is no liquid in thetank 27,the, Weight'of the I ball 25 will mofve thetank upwardly, therebyloosening the chain 30, so that the check draft will be closed, andpulling the chain 31 sufficiently to open damper 11. When in thisposition, the tank should. be some distance above the water level in thechamber 14, so that the tank may move downwardly a sufiicient distanceto have a contrary effect on the position of the damper and check draftbefore reaching a position where the bottom of the tank is level withthe water level in the chamber. 7

Three bolts 36 have their ends screwed into the side of the chamber 14through which tube 21 extends, one being spaced below said tube and. theother two being spaced equally distant horizontally from the first. Aplate 37 is pivoted on the central bolt 36 and provided with curvedslots 38 through which the other bolts 36 project, thereby limiting itspivotal movement. Lugs 39 and 40 extend laterally from the upper cornersof plate 37 and have threaded openings therein adapted to receive bolts41 and 42. A. spring 43 encircles the bolt 41 and engages the lug 89 andthe tube 26 to hold them yieldingly separated.

A pet cook 44 is adapted to chamber 14 when desired. A pressure gage 32communicates with the top and bottom of chamber 14 and has valves ateach end to allow operation of the regulator temporarily should theglass of the gage break. A pet cock 45 is adapted to drain the gage whendesired.

In the practical operation of my device, the bushing 19 is screwed intothe bushing 18 until the packing 20 is squeezed tightly enough aroundthe tube 21 to make a liquid and gas tight joint.

Sufiicient fireis then made in the boiler to bring the vapor therein toapproximately the desired pressure;

My regulator will cause the damper to remain open until the vaporreaches a predetermined pressure, when the water in the chamber 14,which by means of the pipe 15 is kept under the same pressure as theboiler, will be forced by such pressure up into the tank 27 through tube21 and its connections until enough water accumulates in said tank tocounterbalance weight 25, thereby lowering said tank until the damper 11closes on account of the loosening of chain 31, and check draft 12 willbe opened by the consequent tightening of chain 30.

It will be understood that water enough to operate the device may beplaced in the chamber 14 when it is installed, or thatcondensation ofthe vapor received by it from the tube 15 will fill it to the overflowlevel.

after it has been used in connection with an operated boiler for a veryshort time.

The pressure gage operates through its connections with the top andbottom of the chamber to indicate the amount of water therein.Thisserves two purposes, for by the amount of water in the tube, it canbe drain the determined at a glance if the device is working right, asfor instance, if the overflow tube 16 or the vapor tube 15 should becomestopped up, the operator could tell in a moment by a glance at the gage,for in the former case the water would fill the tube completely, and inthe latter case the water would remain some distance below the overflowlevel although the tank 27 remained in its upper position. The gage isalso graduated so that the difference in the'water level due to somewater in the chamberf14 sure in the boiler may be changed by regulatingthe height at which the water in the tank 27 is raised by the pressurein the chamber 14, when the accumulated water in the former willcounterbalance the weight, thereby changing the position of the tan andthe damper and draft. I The plate 37 with bolts 41 and spring 43operates to limit and regulate the movement of arms 24 and 26 bypreventing movement of the latter through an are greater than the lengthof the slots 36. By turning bolts 41 and 42', the compression on spring43 may be adjusted to form a spring cushion for tank 27 when itreachesrthe downward limit of its movement. The sliding ball 25 on arm24 allows a fine adjustment of the weight.

of water necessary to counterbalance the ball, with a consequent closeradjustment of the pressure in the boiler.

Some changes may be made in the arrangement and construction of theparts of my damper regulator, and it is my intention to cover by thisapplication any such changes in the arrangement and construction whichmay be included within the reasonable scope of my claims.

I claim as my invention:

1. In a device of the class described, a support, a receptacle at oneend thereof, designed to be in communication with a boiler, a tuberotatably mounted in the wall of said receptacle near the upper endthereof, a tube extending downwardly from the inner end of said firsttube, a tube mounted on and communicating with said first tube having apartition on one side of the opening in said first tube, a receptaclemounted on said third tube and communicating therewith at the endthereof opposite said partition, and means for connecting said lastdescribed receptacle with draft regulatingdevices.

2. In a device of the class described, a receptacle, designed to be incommunication with a boiler, a tube rotatably extended through the upperWall of said receptacle, a tube mounted on said first tube andcommunicating therewith, a Weight on one end of said second tube, areceptacle on the other end of said second tube communicating therewith,a plate mounted below said rotatably mounted tube, having in its endscurved slots, said plate being pivotally supported, members secured tosaid first receptacle and extending through said slots, adjustable boltscarried by said plate designed to engage said second tube on oppositesides of its pivotal point.

3. In a device of the class described, a receptacle, designed to be incommunication with a boiler, a tube rotatably extended through the upperWall of said receptacle, a tube mounted on said first tube andcommunicating therewith, a Weight on one end of said second tube, areceptacle on the other end of said second tube communicating therewith,a plate mounted below said rotatably mounted tube, having in its endscurved slots, said plate being pivotally supported, members secured tosaid first receptacle and extending through said slots, adjustable boltscarried by said plate designed to engage said second tube on oppositesides of its pivotal point, and a spring mounted on the bolt nearestsaid second tube.

Des Moines, Iowa, October 25, 1916.

THOMAS CON N ELL.

Copies 01 this patent may be obtained for five cents each, by addressingthe commissioner of Patents.

Washington, D. 0.

